Method for manufacturing magnetic core

Abstract

The invention provides an apparatus (with a corresponding method) for manufacturing a magnetic wound core of a toroidal transformer. The apparatus in accordance with a preferred embodiment of the invention comprises a control device for controlling the apparatus based on parameters of the core material and the wound core, a supplying device for providing the core material ribbon, a grinding device for grinding the lateral edges of the core material ribbon under the control of the control device, and a winding device for receiving and winding the core material ribbon into the wound core. The apparatus according to a further embodiment of the invention further comprises a calibration device for keeping the core material leaving from the supplying device horizontally and centered, a counting device for measuring the length of the core material passing therethrough, a punch device for cutting off the core material ribbon under the control of the control device, a selecting device for directing the core material ribbon for disposal under the control of the control device, and an unloading device for taking the wound core out of the winding device.

1 - 20 . (Cancelled)  
   
   
       21 . A method for manufacturing a magnetic wound core having an R-angle from a core material ribbon, the method comprising the steps of: 
 cutting the core material ribbon into a predetermined length;    forming the core material ribbon having lateral edges into a spread-out shape;    grinding the lateral edges of the core material ribbon; and winding the core material ribbon into the core wound.    
   
   
       22 . The method of  claim 21  wherein the spread-out shape is a generally trapezoidal shape.  
   
   
       23 . The method of  claim 21  further comprising the step of coating insulating material onto the core material ribbon with silicon steel.  
   
   
       24 . The method of  claim 21  further comprising the steps of: 
 securing one end of the core material ribbon using a clamping device;    rotating the clamping device to wind the core material ribbon into the wound core;    pressing on the wound core with a predetermined force; and welding another end of the core material ribbon onto the wound core.    
   
   
       25 . The method of  claim 21  further comprising the step of applying a predetermined pressing force on the core material ribbon.  
   
   
       26 . The method of  claim 21  further comprising the step of measuring a length of the core material ribbon passing through a counting device.  
   
   
       27 . The method of  claim 21  further comprising the steps of: 
 cutting off the core material ribbon; and    disposing of the core material ribbon.    
   
   
       28 . The method of  claim 21  wherein the core material ribbon comprises a generally flat shape in cross-section and generally V-shaped configuration in cross-section.  
   
   
       29 . The method of  claim 21  further comprising the step of controlling the apparatus according to parameters of the core material ribbon and the wound core.  
   
   
       30 . The method of  claim 28  wherein the parameters comprise thickness and length of the core material ribbon, and inner and outer diameters if the wound core.